CN104651645B - A kind of preparation method of low-carbon (LC) micro-calcium aluminum-iron alloy - Google Patents
A kind of preparation method of low-carbon (LC) micro-calcium aluminum-iron alloy Download PDFInfo
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- CN104651645B CN104651645B CN201510065714.5A CN201510065714A CN104651645B CN 104651645 B CN104651645 B CN 104651645B CN 201510065714 A CN201510065714 A CN 201510065714A CN 104651645 B CN104651645 B CN 104651645B
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Abstract
The invention discloses the preparation method of a kind of low-carbon (LC) micro-calcium aluminum-iron alloy, concrete steps include configuring raw material, melting, slag making, refine degasification, deslagging and casting, aluminum, manganese, ferrum and covering flux it is sequentially added into during melting, melting is sequentially added into slag former, refine degasifier and deslagging agent after completing, the raw material of slag former includes dolomite, Calx, bauxite and manganese oxide, the raw material of refine degasifier includes: fluorite, activated carbon, calcium carbonate and ammonium carbonate, and the raw material of deslagging agent includes: calcium carbonate, sodium carbonate, sodium fluoride, sodium chloride, cryolite and calcium fluoride.The fractograph of aluminum-manganese-iron alloy prepared by the present invention is fine and close, and without slag inclusion pore, recovery rate is high, alloy density is big, and production cost is low, easy to use, and the content of impurity is extremely low, contribute to adjusting copper alloy composition, improve cupromanganese quality further, reduce labor intensity.
Description
Technical field
The present invention relates to refinement additive technical field, the preparation method of a kind of low-carbon (LC) micro-calcium aluminum-iron alloy.
Background technology
Being substantially all during copper metallurgy at present and use copper aluminum, copper manganese and copper ferrum intermediate alloy etc. as element additive, need to be added by several times, production cost is high, and labor intensity is big.
Forefathers had the most once invented the method preparing magnesium-aluminum-ferromanganese alloy, but it is all that low-melting magnesium, aluminum metal are first made intermediate alloy, because magnesium easily with oxygen reactive combustion, making intermediate alloy can suppress reaction to occur, again intermediate alloy and ferromanganese being made magnesium-aluminum-ferromanganese alloy, such process makes magnesium, aluminum secondary smelting, and scaling loss is the most serious, recovery rate is the lowest, and smelting cycle is long.
Summary of the invention
It is an object of the invention to provide the preparation method of the aluminum-iron alloy that a kind of production cost is low, recovery rate is high, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
The preparation method of a kind of aluminum-iron alloy, specifically comprises the following steps that
(1) according to copper metallurgy requirement, carry out configuring raw material according to the aluminum calculated, manganese, the consumption of ferrum；
(2) joining in electromagnetic induction furnace by aluminum, electromagnetic induction furnace carries out heating 3-5min with the rate of heat addition of 200-250 DEG C/min, and in-furnace temperature is preheated to the manganese of 40-45 DEG C to adding when 850-950 DEG C；
(3) continuing heating 2-4min, in electromagnetic induction furnace, temperature adds the ferrum being preheated to 50-60 DEG C when being 1100-1200 DEG C, and when heating 3-5min to ferrum major part melts, the rate of heat addition of reduction electromagnetic induction furnace is to 40-50 DEG C/min, continues to be heated to ferrum and all melts；
(4) after ferrum all melts, then adding covering flux above molten metal, thickness is 0.5-1mm, carries out electromagnetic agitation 9-11min and stops heating after being completely melt；
(5) carrying out slag making according to the slag former of the total amount addition 0.5-1% that feeds intake, regulation basicity is to 1.2-1.8, and carries out the process of oxygen decarburization and dephosphorization；
(6) carry out dehydrogenation denitrogenation processing according to the refine degasifier of the total amount addition 0.3-0.5% that feeds intake, add the deslagging agent of 0.2-0.4% after having processed, slag is taken off outside coming out of the stove；
(7) treat that in electromagnetic induction furnace, temperature is down to 1050-1150 DEG C, take sample, detect qualified after, molten metal is come out of the stove and is poured mould into and cast strip and block aluminum-manganese-iron alloy product, is subsequently cooled to room temperature；
(8) carry out end product quality to check again, put in storage after the assay was approved.
As the further scheme of the present invention: described ferrum is Low Carbon Iron.
As the further scheme of the present invention: described covering flux is the mixture of cullet and sodium carbonate.
As the further scheme of the present invention: described slag former includes according to the raw material of weight portion: dolomite 3-8 part, Calx 60-80 part, bauxite 8-10 part, manganese oxide 3-5 part.
As the further scheme of the present invention: described refine degasifier includes according to the raw material of weight portion: fluorite 20-30 part, activated carbon 20-25 part, calcium carbonate 40-50 part, ammonium carbonate 10-20 part.
As the further scheme of the present invention: described deslagging agent includes according to the raw material of weight portion: calcium carbonate 10-18 part, sodium carbonate 12-20 part, sodium fluoride 20-25 part, sodium chloride 30-35 part, cryolite 8-12 part, calcium fluoride 5-8 part.
As the present invention further scheme: the thickness of described strip and block aluminum-manganese-iron alloy is 25-30mm, a length of 50-60mm.
Compared with prior art, the invention has the beneficial effects as follows:
The fractograph of aluminum-manganese-iron alloy prepared by the present invention is fine and close, and without slag inclusion pore, recovery rate is high, alloy density is big, and production cost is low, easy to use, and the content of impurity is few, this alloy contributes to adjusting the composition of copper alloy, improves the quality of copper alloy further, reduces labor intensity.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail.
Embodiment 1
In the embodiment of the present invention, the preparation method of a kind of aluminum-iron alloy, specifically comprise the following steps that
(1) according to copper metallurgy requirement, carry out configuring raw material according to the aluminum calculated, manganese, the consumption of Low Carbon Iron；
(2) joining in electromagnetic induction furnace by aluminum, electromagnetic induction furnace carries out heating 3min with the rate of heat addition of 200 DEG C/min, adds the manganese being preheated to 40 DEG C during in-furnace temperature to 850 DEG C；
(3) continuing heating 2min, in electromagnetic induction furnace, temperature adds the Low Carbon Iron being preheated to 50 DEG C when being 1100 DEG C, and when heating 3min to Low Carbon Iron major part melts, the rate of heat addition of reduction electromagnetic induction furnace is to 40 DEG C/min, continues to be heated to Low Carbon Iron and all melts；
(4) adding magnesium and copper after Low Carbon Iron all melts, then add cullet and the mixture of sodium carbonate above molten metal, thickness is 0.5mm, carries out electromagnetic agitation 9min and stops heating after being completely melt；
(5) carrying out slag making according to the slag former of the total amount addition 0.5% that feeds intake, regulation basicity is to 1.2, and carries out the process of oxygen decarburization and dephosphorization；Slag former includes according to the raw material of weight portion: dolomite 3 parts, 60 parts of Calx, bauxite 8 parts, manganese oxide 3 parts；
(6) carry out dehydrogenation denitrogenation processing according to the refine degasifier of the total amount addition 0.3% that feeds intake, add the deslagging agent of 0.2% after having processed, slag is taken off outside coming out of the stove；Refine degasifier includes according to the raw material of weight portion: 20 parts of fluorite, activated carbon 20 parts, calcium carbonate 40 parts, ammonium carbonate 10 parts；Deslagging agent includes according to the raw material of weight portion: calcium carbonate 10 parts, sodium carbonate 12 parts, sodium fluoride 20 parts, 30 parts of sodium chloride, cryolite 8 parts, 5 parts of calcium fluoride；
(7) treat that in electromagnetic induction furnace, temperature is down to 1050 DEG C, take sample survey qualified after, molten metal is come out of the stove and is poured mould into and cast strip and block aluminum manganese low carbon ferroalloy product, the coldest goes to room temperature；
(8) carrying out end product quality to check, the thickness of finished product strip and block aluminum-manganese-iron alloy is 25mm again, and a length of 50mm puts in storage after the assay was approved.
Embodiment 2
In the embodiment of the present invention, the preparation method of a kind of aluminum-iron alloy, specifically comprise the following steps that
(1) according to copper metallurgy requirement, carry out configuring raw material according to the aluminum calculated, manganese, the consumption of Low Carbon Iron；
(2) joining in electromagnetic induction furnace by aluminum, electromagnetic induction furnace carries out heating 3.5min with the rate of heat addition of 210 DEG C/min, adds the manganese being preheated to 41 DEG C during in-furnace temperature to 880 DEG C；
(3) continuing heating 2.5min, in electromagnetic induction furnace, temperature adds the Low Carbon Iron being preheated to 52 DEG C when being 1120 DEG C, and when heating 3.5min to Low Carbon Iron major part melts, the rate of heat addition of reduction electromagnetic induction furnace is to 42 DEG C/min, continues to be heated to Low Carbon Iron and all melts；
(4) adding magnesium and copper after Low Carbon Iron all melts, then add cullet and the mixture of sodium carbonate above molten metal, thickness is 0.6mm, carries out electromagnetic agitation 9.5min and stops heating after being completely melt；
(5) carrying out slag making according to the slag former of the total amount addition 0.6% that feeds intake, regulation basicity is to 1.3, and carries out the process of oxygen decarburization and dephosphorization；Slag former includes according to the raw material of weight portion: dolomite 4 parts, 65 parts of Calx, bauxite 8.5 parts, manganese oxide 3.5 parts；
(6) carry out dehydrogenation denitrogenation processing according to the refine degasifier of the total amount addition 0.35% that feeds intake, add the deslagging agent of 0.25% after having processed, slag is taken off outside coming out of the stove；Refine degasifier includes according to the raw material of weight portion: 22 parts of fluorite, activated carbon 21 parts, calcium carbonate 42 parts, ammonium carbonate 12 parts；Deslagging agent includes according to the raw material of weight portion: calcium carbonate 12 parts, sodium carbonate 14 parts, sodium fluoride 21 parts, 31 parts of sodium chloride, cryolite 9 parts, 6 parts of calcium fluoride；
(7) treat that in electromagnetic induction furnace, temperature is down to 1080 DEG C, take the qualified rear molten metal of sample survey and come out of the stove and pour mould into and cast strip and block aluminum manganese low carbon ferroalloy product, cold go to room temperature；
(8) carrying out end product quality inspection, the thickness of finished product strip and block aluminum-manganese-iron alloy is 26mm, and a length of 52mm puts in storage after the assay was approved.
Embodiment 3
In the embodiment of the present invention, the preparation method of a kind of aluminum-iron alloy, specifically comprise the following steps that
(1) according to copper metallurgy requirement, carry out configuring raw material according to the aluminum calculated, manganese, the consumption of Low Carbon Iron；
(2) joining in electromagnetic induction furnace by aluminum, electromagnetic induction furnace carries out heating 4 with the rate of heat addition of 220 DEG C/min, min, adds the manganese being preheated to 42 DEG C during in-furnace temperature to 900 DEG C；
(3) continuing heating 3min, in electromagnetic induction furnace, temperature adds the Low Carbon Iron being preheated to 55 DEG C when being 1150 DEG C, and when heating 4min to Low Carbon Iron major part melts, the rate of heat addition of reduction electromagnetic induction furnace is to 45 DEG C/min, continues to be heated to Low Carbon Iron and all melts；
(4) adding cullet and the mixture of sodium carbonate after Low Carbon Iron all melts above molten metal, thickness is 0.7mm, carries out electromagnetic agitation 10min and stops heating after being completely melt；
(5) carrying out slag making according to the slag former of the total amount addition 0.8% that feeds intake, regulation basicity is to 1.4, and carries out the process of oxygen decarburization and dephosphorization；Slag former includes according to the raw material of weight portion: dolomite 6 parts, 70 parts of Calx, bauxite 9 parts, manganese oxide 4 parts；
(6) carry out dehydrogenation denitrogenation processing according to the refine degasifier of the total amount addition 0.4% that feeds intake, add the deslagging agent of 0.3% after having processed, slag is taken off outside coming out of the stove；Refine degasifier includes according to the raw material of weight portion: 25 parts of fluorite, activated carbon 22 parts, carbonic acid Ca45 part, ammonium carbonate 15 parts；Deslagging agent includes according to the raw material of weight portion: calcium carbonate 14 parts, sodium carbonate 16 parts, sodium fluoride 22 parts, 32 parts of sodium chloride, cryolite 10 parts, 7 parts of calcium fluoride；
(7) treat that in electromagnetic induction furnace, temperature is down to 1100 DEG C, take the qualified rear molten metal of sample survey and come out of the stove and pour mould into and cast strip and block aluminum manganese low carbon ferroalloy product, cold go to room temperature；
(8) carrying out end product quality to check, the thickness of finished product strip and block aluminum-manganese-iron alloy is 27mm again, and a length of 55mm puts in storage after the assay was approved.
Embodiment 4
In the embodiment of the present invention, the preparation method of a kind of aluminum-iron alloy, specifically comprise the following steps that
(1) according to copper metallurgy requirement, carry out configuring raw material according to the aluminum calculated, manganese, the consumption of Low Carbon Iron；
(2) joining in electromagnetic induction furnace by aluminum, electromagnetic induction furnace carries out heating 4.5min with the rate of heat addition of 240 DEG C/min, adds the manganese being preheated to 44 DEG C during in-furnace temperature to 920 DEG C；
(3) continuing heating 3.5min, in electromagnetic induction furnace, temperature adds the Low Carbon Iron being preheated to 58 DEG C when being 1180 DEG C, and when heating 4.5min to Low Carbon Iron major part melts, the rate of heat addition of reduction electromagnetic induction furnace is to 48 DEG C/min, continues to be heated to Low Carbon Iron and all melts；
(4) adding cullet and the mixture of sodium carbonate after Low Carbon Iron all melts above molten metal, thickness is 0.8mm, carries out electromagnetic agitation 10.5min and stops heating after being completely melt；
(5) carrying out slag making according to the slag former of the total amount addition 0.9% that feeds intake, regulation basicity is to 1.6, and carries out the process of oxygen decarburization and dephosphorization；Slag former includes according to the raw material of weight portion: dolomite 7 parts, 75 parts of Calx, bauxite 9.5 parts, manganese oxide 4.5 parts；
(6) carry out dehydrogenation denitrogenation processing according to the refine degasifier of the total amount addition 0.45% that feeds intake, add the deslagging agent of 0.35% after having processed, slag is taken off outside coming out of the stove；Refine degasifier includes according to the raw material of weight portion: 28 parts of fluorite, activated carbon 24 parts, calcium carbonate 48 parts, ammonium carbonate 18 parts；Deslagging agent includes according to the raw material of weight portion: calcium carbonate 16 parts, sodium carbonate 18, part, sodium fluoride 24 parts, 34 parts of sodium chloride, cryolite 11 parts, 7 parts of calcium fluoride；
(7) treat that in electromagnetic induction furnace, temperature is down to 1120 DEG C, take the qualified rear molten metal of sample survey and come out of the stove and pour mould into and cast strip and block aluminum manganese low carbon ferroalloy product, cold go to room temperature；
(8) carrying out end product quality to check, the thickness of finished product strip and block aluminum-manganese-iron alloy is 29mm again, and a length of 58mm puts in storage after the assay was approved.
Embodiment 5
In the embodiment of the present invention, the preparation method of a kind of aluminum-iron alloy, specifically comprise the following steps that
(1) according to copper metallurgy requirement, carry out configuring raw material according to the aluminum calculated, manganese, the consumption of Low Carbon Iron；
(2) joining in electromagnetic induction furnace by aluminum, electromagnetic induction furnace carries out heating 5min with the rate of heat addition of 250 DEG C/min, adds the manganese being preheated to 45 DEG C during in-furnace temperature to 950 DEG C；
(3) continuing heating 4min, in electromagnetic induction furnace, temperature adds the Low Carbon Iron being preheated to 60 DEG C when being 1200 DEG C, and when heating 5min to Low Carbon Iron major part melts, the rate of heat addition of reduction electromagnetic induction furnace is to 50 DEG C/min, continues to be heated to Low Carbon Iron and all melts；
(4) adding cullet and the mixture of sodium carbonate after Low Carbon Iron all melts above molten metal, thickness is 1mm, carries out electromagnetic agitation 11min and stops heating after being completely melt；
(5) carrying out slag making according to the slag former of the total amount addition 1% that feeds intake, regulation basicity is to 1.8, and carries out the process of oxygen decarburization and dephosphorization；Slag former includes according to the raw material of weight portion: dolomite 8 parts, 80 parts of Calx, bauxite 10 parts, manganese oxide 5 parts；
(6) carry out dehydrogenation denitrogenation processing according to the refine degasifier of the total amount addition 0.5% that feeds intake, add the deslagging agent of 0.4% after having processed, slag is taken off outside coming out of the stove；Refine degasifier includes according to the raw material of weight portion: 30 parts of fluorite, activated carbon 25 parts, calcium carbonate 50 parts, ammonium carbonate 20 parts；Deslagging agent includes according to the raw material of weight portion: calcium carbonate 18 parts, sodium carbonate 20 parts, sodium fluoride 25 parts, 35 parts of sodium chloride, cryolite 12 parts, 8 parts of calcium fluoride；
(7) treat that in electromagnetic induction furnace, temperature is down to 1150 DEG C, take the qualified rear molten metal of sample survey and come out of the stove and pour mould into and cast strip and block aluminum manganese low carbon ferroalloy product, cold go to room temperature；
(8) carrying out end product quality inspection, the thickness of finished product strip and block aluminum-manganese-iron alloy is 30mm, and a length of 60mm puts in storage after the assay was approved.
The fractograph of aluminum-manganese-iron alloy prepared by the present invention is fine and close, and without slag inclusion pore, recovery rate is high, alloy density is big, and production cost is low, easy to use, and the content of impurity is few, this alloy contributes to adjusting copper alloy composition, improves copper alloy quality further, reduces labor intensity.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art is possessed, it is also possible to various changes can be made on the premise of without departing from this patent objective.
Claims (7)
1. the preparation method of an aluminum-iron alloy, it is characterised in that specifically comprise the following steps that
(1) according to copper metallurgy requirement, carry out configuring raw material according to the aluminum calculated, manganese, the amount of ferrum；
(2) joining in electromagnetic induction furnace by aluminum, electromagnetic induction furnace carries out heating 3-5min with the rate of heat addition of 200-250 DEG C/min, and in-furnace temperature is preheated to the manganese of 40-45 DEG C to adding when 850-950 DEG C；
(3) continuing heating 2-4min, in electromagnetic induction furnace, temperature adds the ferrum being preheated to 50-60 DEG C when being 1100-1200 DEG C, and when heating 3-5min to ferrum major part melts, the rate of heat addition of reduction electromagnetic induction furnace is to 40-50 DEG C/min, continues to be heated to ferrum and all melts；
(4) adding covering flux after ferrum all melts above molten metal, thickness is 0.5-1mm, carries out electromagnetic agitation 9-11min and stops heating after being completely melt；
(5) carrying out slag making according to the slag former of the total amount addition 0.5-1% that feeds intake, regulation basicity is to 1.2-1.8, and carries out the process of oxygen decarburization and dephosphorization；
(6) carry out dehydrogenation deoxidation treatment according to the refine degasifier of the total amount addition 0.3-0.5% that feeds intake, add the deslagging agent of 0.2-0.4% after having processed, slag is taken off outside coming out of the stove；
(7) treating that in electromagnetic induction furnace, temperature is down to 1050-1150 DEG C, take sample, after the assay was approved, molten metal is come out of the stove and is poured mould into and cast strip and block aluminum-manganese-iron alloy product, is subsequently cooled to room temperature；
(8) carry out end product quality to check again, put in storage after the assay was approved.
The preparation method of aluminum-iron alloy the most according to claim 1, it is characterised in that described ferrum is Low Carbon Iron.
The preparation method of aluminum-iron alloy the most according to claim 1, it is characterised in that described covering flux is the mixture of cullet and sodium carbonate.
The preparation method of aluminum-iron alloy the most according to claim 1, it is characterised in that described slag former includes according to the raw material of weight portion: dolomite 3-8 part, Calx 60-80 part, bauxite 8-10 part, manganese oxide 3-5 part.
The preparation method of aluminum-iron alloy the most according to claim 1, it is characterised in that described refine degasifier includes according to the raw material of weight portion: fluorite 20-30 part, activated carbon 20-25 part, calcium carbonate 40-50 part, ammonium carbonate 10-20 part.
The preparation method of aluminum-iron alloy the most according to claim 1, it is characterized in that, described deslagging agent includes according to the raw material of weight portion: calcium carbonate 10-18 part, sodium carbonate 12-20 part, sodium fluoride 20-25 part, sodium chloride 30-35 part, cryolite 8-12 part, calcium fluoride 5-8 part.
The preparation method of aluminum-iron alloy the most according to claim 1, it is characterised in that the thickness of described strip and block aluminum-manganese-iron alloy product is 25-30mm, a length of 50-60mm.
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| CN108998631A (en) * | 2018-08-08 | 2018-12-14 | 鞍钢股份有限公司 | Calcium oxide-based Mn series alloy dephosphorized slag, preparation and the application method of oxidation-containing cerium |
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